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spare tire

 - 3 dictionary results

spare tire

–noun
1. a tire used or kept available as an emergency replacement on a vehicle.
2. Informal. excess fat around the waistline.

Origin:
1920–25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To spare tire
spare tire  
n.  
  1. An additional tire carried in a vehicle as a replacement for one that goes flat.

  2. Slang A paunch; a potbelly.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Idioms & Phrases

spare tire

Fat around one's middle, as in He's determined to lose ten pounds and that spare tire he's acquired. This expression transfers the term for an extra tire carried in cars in case of a flat tire to excess fat around the waist. [Colloquial; mid-1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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